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From: dweisman@umiami.ir.miami.edu (Ordinary Man)
Newsgroups: comp.sys.mac.programmer
Subject: Different way to redraw windows?
Message-ID: <1991May7.002959.9701@umiami.ir.miami.edu>
Date: 7 May 91 04:29:59 GMT
Organization: Univ of Miami IR
Lines: 25


	I have an interesting question from one of my professors here...

When you have stuff in a window on the screen, and you cover it with another 
window, what happens to the bits of memory that were obscured by the covering 
window? If the memory occupied by 2 windows is separate and contiguous, then 
shouldn't the memory of the obscured window remain intact? If so, why can you 
redraw based on that memory? On a similar note, why can't you implement the 
redrawing of windows like the Menu Manager handles the redrawing of bits 
obscured by a menu when you pull it down? Now that's a fast redraw! :-)

Please excuse the clumsy wording of this question as it was somewhat hard to
put into words from my professor.

Thanks,
Dan

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